User Manual
Documents are only to be used and distributed completely and unchanged. It is strictly the users’ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999164 / 19/05/2009
page 36 of 75
The last process (not in function VACUULAN) is stored in the temporary data memory as long as the
controller stays switched on. This program can be transferred to a storage space and edited.
Once the program is nished, the clock symbol starts to ash. Conrm the end of the program by press-
ing START/STOP (clock symbol will disappear).
Attention: If ”Autostart” is set to ”On”, the program will start again (time will be reset to 00:00:00)
after a power failure or after switching the controller off/on. Only if the end of the program (clock symbol
ashing) has been conrmed by pressing START/STOP, the program will not start again.
Attention: If the controller is set to ”Defaults”: ”On”, all stored programs will be deleted.
Example for use
Example
NT VARIO vacuum pump with speed control (e. g. at a rotary evaporator): Degassing and auto-
matic distillation with timing
Program step 1 should be always a denite initial state, here atmospheric pressure (ATM). To reach this
state denitely, set a tickmark at ”Vent.” and ”Step” (press selection knob).
In step 2 pumping down starts as fast as possible (”Step”) to 300 mbar and the vacuum is kept for 10
minutes (degassing of the solvent).
In step 3 ”Auto ” causes an automatic search of the boiling vacuum in the pressure interval between
300 mbar and 2 mbar and automatic adaptation to a changing boiling pressure. The following step starts
if time is over (after 60 minutes) even if the preset pressure (2 mbar) is still not reached or if a vacuum
of 2 mbar is reached even if the preset time has not passed.
Step 4 vents to atmospheric pressure as fast as possible and switches off the control after one minute.
➜
Program
No hh:mm:ss Vac Vent. Step Auto
01 00:00:00 ATM ✔ ✔
02 00:10:00 300 ✔
03 01:00:00 2 *
04 00:01:00 ATM ✔ ✔
05 00:00:00 0
06 00:00:00 0
07 00:00:00 0
08 00:00:00 0
09 00:00:00 0
10 00:00:00 0
- - - - - - - - - - - - - Back - - - - - - - - - - - - - -
01:11:00
➜
* If the pressure difference between the vacuum for
degassing and the expected vacuum for distillation
is very small (distillation vacuum >75% of the de-
gassing vacuum), select the function ”Auto ” in-
stead of ”Auto ” (adapting the vacuum).
➜